Improvement



k L. PHLEGER. zsheets--sheern Improvement in Steam-Generators.

No. 127,511. PatentedJune4,1872.

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Improvement in Steam-Generators.

N0. 127,511, w I Patentedlune 4,1872.

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. UNITED STATES PATENT OFFICE.

LEONARD PHLEGER, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT I`N STEAM-GE-NERATORS.

Specilieation forming part of Letters Patent No. 127,511, dated'June 4, 1872.

Specification describing certain Improve ments in Steam-Generators, invented by LEON- ARD PHLEGER, ot' the city of Philadelphia, in the State of Pennsylvania.

My improvements consist in the combination of the water-tubes, circulationpipes, steam-drum, and water-cells.

In the drawing, Figure l is a frontview of my improved generator with the bonnets re- 1n oved, Fig. 2, a longitudinal vertical section of the generator; Fig. 8, an elevation of the rear side ot' the same, the two circulation-pi pes e and f being indicated by dotted lines, the bonnets of the water-cells being removed, and the steam-drum being in section.

a represents an ordinaryr furnace; I) the lower, and c the upper series, of inclined Watertubes; (I, the steam-drum; e and j', curved circulation-pipes, which are attached at their.

upper ends, bytlanges and bolts, to the stea1ndrum d, and at their lower ends to the tubular bonnets g and h, Fig. 2, of the water-cells j and k, which are connected with the upper and lower series of Water-tubes, respectively. m is a re-briok partition supported by iron bars n, which extend across from one side to the other side or" the furnace, resting ou the side walls thereof. This partition may be arched, and thus made selfsupporting, if desired. o represents another partition of fire-bricks supported by iron bars 19, which are similar in construction and arrangement to the iron bars n. The partition o forms one side of the flue q, of which the steam-drum d forms the other side. The iiueqleads into the smoke-stack, not shown, situated near the rear end of the drum d. r, s, t, and a are iron stands, each having an L-shaped base, (see Fi g. 2,) embedded in the side walls of the i'urnace, and each having below and near its up per end a projecting shelf or bracket for supporting the water-cells, the front cell l being tree to move on its shelf, and thus prevent the Vexpansion and contraction of the Watertubes from injuriously atfecting the joints of these. tubes. The water-cells j k l are attached to the water-tubes b and c by steam-tight joints.

Where the water-tubes b and c are of any length, varyingfrom three feet to twenty feet, the elevation of the front end of the lower tubes b is from fifteen inches to eighteen inches above the horizontal plane wherein the rear ends of these tubes rest; and the eleva-tion of the rear ends of the upper tubes c is from one inch to one and one-half inch above the horizontal plane wherein the front ends of said tubes c rest.

I claim- The combin ation of the inclined water-tubes b and c, circulation-pipes e and f, steam-drum d, and water-cells j, 7c, and Z, all constructed and arranged in the manner and for the purpose substantially as set forth.

LEONARD PHLEGER.

Witnesses Guns. PAEHAM, GovE MITCHELL. 

